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Stefanie D. Livers, Kristin E. Harbour and Lindsey Fowler

In our attempts to make a concept easier, we may hinder student learning.

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Clayton M. Edwards, Rebecca R. Robichaux-Davis and Brian E. Townsend

Three inquiry-based tasks highlight the planning, classroom discourse, positive results, and growth in one class's journey.

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Stephen Phelps

Edited by Anna F. DeJarnette

A monthly set of problems targets a variety of ability levels.

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P. Reneé Hill-Cunningham

Hundreds of species of animals around the world are losing their habitats and food supplies, are facing extinction, or have been hunted or otherwise negatively influenced by humans. Students learn about some of these animals and explore multiple solution strategies as they solve this month's problems. Math by the Month features collections of short activities focused on a monthly theme. These articles aim for an inquiry or problem-solving orientation that includes four activities each for grade bands K–2, 3–4, and 5–6.

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Sarah Ferguson

Explore the creation of a unique problem-based learning (PBL) experience.

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Megan H. Wickstrom, Elizabeth Fulton and Dacia Lackey

Use those multicolored linking bricks to help students connect measurement with an understanding of number and operations as well as fractions.

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Stephen Phelps

Edited by Anna F. DeJarnette

A monthly set of problems is aimed at a variety of ability levels.

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Jennifer Suh, Sara Birkhead, Rachelle Romero Farmer, Terrie Galanti, Alexandrea Nietert, Tyler Bauer and Padmanabhan Seshaiyer

Working with a mathematics coach and university researchers in a K-4 lesson study, teachers increase their understanding of student abilities in a fair-share sandwich problem.

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Isaac Frank

A critique of FOIL provides an alternate method of multiplying polynomials.